{"product_id":"dayton-audio-ultimax-ii-18-zoll-subwoofer","title":"Ultimax II UMII18-22","description":"\u003cp\u003eThe Dayton Audio Ultimax II UMII18-22 is an 18 inch (46 cm) Subwoofer with dual voice coils 2 + 2 Ohm. The 76 mm voice coil, a diaphragm made of Nomex honeycomb composite with fiberglass reinforcement, and an aluminum basket form the foundation. A large rubber surround and dual 203 mm spiders allow for a total excursion of over 50.8 mm with an Xmax of 28 mm. The specifications include a sensitivity of 90.7 dB (2.83 V\/1 m), a resonance frequency of 22 Hz, and a frequency response of 20–500 Hz. Other parameters are a BL of 19.2 Tm, Sd of 1184 cm², Vd of 3315 cm³, and a Vas of 248.2 liters. The dimensions include an outer diameter of 470 mm, a cutout diameter of 426 mm, and a total depth of 258 mm; mounting is done via 8 holes with a diameter of 6.5 mm.\u003c\/p\u003e\n\u003cdiv\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e18 inch (46 cm) Subwoofer\u003c\/li\u003e\n\u003cli\u003eDiaphragm made of Nomex honeycomb composite, fiberglass reinforced\u003c\/li\u003e\n\u003cli\u003eLarge rubber surround\u003c\/li\u003e\n\u003cli\u003eDual 203 mm spiders\u003c\/li\u003e\n\u003cli\u003eTwo 2-Ohm copper voice coils, dual-layer (DVC 2 + 2 Ohm)\u003c\/li\u003e\n\u003cli\u003eVoice coil diameter 76 mm\u003c\/li\u003e\n\u003cli\u003eAluminum basket\u003c\/li\u003e\n\u003cli\u003eTotal excursion of the diaphragm over 50.8 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eSeries: Ultimax II DVC\u003c\/li\u003e\n\u003cli\u003eType: Subwoofer\u003c\/li\u003e\n\u003cli\u003eNominal diameter: 18 inch\u003c\/li\u003e\n\u003cli\u003ePower handling (QMW): 1,200 Watts\u003c\/li\u003e\n\u003cli\u003eImpedance: 2 + 2 Ohm\u003c\/li\u003e\n\u003cli\u003eSensitivity (2.83 V\/1 m): 90.7 dB\u003c\/li\u003e\n\u003cli\u003eFrequency response: 20–500 Hz\u003c\/li\u003e\n\u003cli\u003eVoice coil diameter: 76 mm\u003c\/li\u003e\n\u003cli\u003eDC resistance (Re): 4.2 Ohm\u003c\/li\u003e\n\u003cli\u003eVoice coil inductance (Le): 1.15 mH\u003c\/li\u003e\n\u003cli\u003eResonance frequency (Fs): 22 Hz\u003c\/li\u003e\n\u003cli\u003eQms: 2.53\u003c\/li\u003e\n\u003cli\u003eQes: 0.67\u003c\/li\u003e\n\u003cli\u003eQts: 0.53\u003c\/li\u003e\n\u003cli\u003eMoving mass (Mms): 420 g\u003c\/li\u003e\n\u003cli\u003eDiaphragm area (Sd): 1184 cm²\u003c\/li\u003e\n\u003cli\u003eDisplacement volume (Vd): 3315 cm³\u003c\/li\u003e\n\u003cli\u003eForce factor (BL): 19.2 Tm\u003c\/li\u003e\n\u003cli\u003eEquivalent volume (Vas): 248.2 liters\u003c\/li\u003e\n\u003cli\u003eMaximum excursion (Xmax): 28 mm\u003c\/li\u003e\n\u003cli\u003eBasket\/frame material: Aluminum\u003c\/li\u003e\n\u003cli\u003eOuter diameter: 470 mm\u003c\/li\u003e\n\u003cli\u003eTotal depth: 258 mm\u003c\/li\u003e\n\u003cli\u003eCutout diameter: 426 mm\u003c\/li\u003e\n\u003cli\u003eMounting holes: 8\u003c\/li\u003e\n\u003cli\u003eDiameter of mounting hole: 6.5 mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dayton Audio","offers":[{"title":"Default Title","offer_id":45959244415243,"sku":"ULTIMAX-II-UMII18-22","price":449.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0271\/9478\/5927\/files\/dayton-audio-ultimax-ii-umii18-22-18-46cm-subwoofer-masori-kaufen.webp?v=1747977096","url":"https:\/\/masprori.com\/en\/products\/dayton-audio-ultimax-ii-umii18-22-18-inch-subwoofer","provider":"Masori | Shop","version":"1.0","type":"link"}